drivers: sensor: adxl345: Updated ADXL345 drv RTIO stream & Trigger func

Updated ADXL345 driver with RTIO stream functionality.
Added Trigger intterupt functionality. RTIO stream is using
FIFO threshold.Together with RTIO stream, RTIO async read
is also implemented.

Signed-off-by: Dimitrije Lilic <dimitrije.lilic@orioninc.com>